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Combustion Instability Prediction Using 1D Thermoacoustic Model in a Gas Turbine Combustor
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  • Journal title : Journal of ILASS-Korea
  • Volume 20, Issue 4,  2015, pp.241-246
  • Publisher : Institute for Liquid Atomization and Spray Systems-Korea
  • DOI : 10.15435/JILASSKR.2015.20.4.241
 Title & Authors
Combustion Instability Prediction Using 1D Thermoacoustic Model in a Gas Turbine Combustor
Kim, Jin Ah; Kim, Daesik;
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 Abstract
The objective of the current study is to develop an 1D thermoacoustic model for predicting basic characteristics of combustion instability and to investigate effects of key parameters on the instabilities such as effects of flame geometry and acoustic boundary conditions. Another focus of the paper is placed on limit cycle prediction. In order to improve the model accuracy, the 1D model was modified considering the actual flame location and flame length (i.e. distribution of time delay). As a result, it is found that the reflection coefficients have a great effect on the growth rate of the instabilities. In addition, instability characteristics are shown to be strongly dependent upon the fuel compositions.
 Keywords
Combustion Instability;Thermoacoustic Model;Reflection Coefficient;Fuel Composition;
 Language
Korean
 Cited by
1.
Combustion Stability Analysis using Feedback Transfer Function, Journal of the Korean Society of Combustion, 2016, 21, 3, 24  crossref(new windwow)
2.
Time Lag Analysis Using Phase of Flame Transfer Function, Journal of ILASS-Korea, 2016, 21, 2, 104  crossref(new windwow)
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